Based on

Movies like Call Girl: Silky Skin Moisture (2002)

Natsuya works at a delivery health service run by a mysterious middle-aged man named Yata together with Harumi, who dreams of opening a store with her boyfriend Takashi, and Akino, a divorced woman who struggled to get into this business. One day, on her way home from work, Natsuya is shocked to find herself floating in the river.